An astronomical clock, horologium, or orloj is a clock with special mechanisms and dials to display astronomical information, such as the relative positions of the Sun, Moon, zodiacal constellations, and sometimes major planets.

This remarkable astronomical clock is one of only two known examples worldwide. Its counterpart, in the Forbidden City at Beijing, differs from it only in minor details.

Su Song's greatest project was the 40-foot-tall water-powered astronomical clock tower constructed in Kaifeng, the wooden pilot model completed in 1088, the bronze components cast by 1090, while the wholly finished work was completed by 1094 during the reign of Emperor Zhezong of Song.

The making of Chinese astronomical instrument reached a peak in the 11th century, during the North Song Dynasty, when Su Song (1020-1101) and his team constructed the water powered astronomical clock tower.

Jan 14, 2019 · And so it was time for the "Cosmic Engine", the greatest of all Chinese medieval clocks built by the astronomer Su Song in 1092. This device was an astronomical clock tower more than 10 metres high, like the previous one of Zhang.

long tradition of astronomical clock-making in China between the seventh and the fourteenth centuries A.D. The key text is the "Hsiu I Hsiang Fa Yao"

Jan 1, 2002 · The Water-transport Celestial Sphere was the first ever-recorded astronomical clock with automatic time-telling device in ancient Chinese history. It was built by the monk Yi Xing ( ) and Liang Ling-Zan ( ) in 723 A.D. during the Tang Dynasty.

One high official, Su Song (1020-1101), is famous for having designed and constructed a mechanical clock tower (almost 40 feet high) by adding a chain-driven mechanism to the existing water-powered clock.

The research fields include computational analysis of ancient Chinese calendars, systematical research and modern analysis of ancient astronomical phenomena, site survey and archaeoastronomy research, and reconstruction of ancient astronomical instruments. Ancient drawings show the neolithic Taosi Observatory, located in north-central China.

Apr 5, 2019 · Amongst all of the ancient astronomers who looked to the sky, Chinese polymath Zhang Heng (张衡) was the first to have invented a water-powered armillary sphere. An …